Writing a book with AI works best when you treat the AI as a fast first-draft partner and keep the decisions for yourself. The steps below work in any tool; the recordings show how each one looks in Book Factory.
Free plan: $4 of AI writing included — about 40 chapters — and no API key needed.
Real screen recordings of the product.
Before generating anything, write one sentence on what the reader gets from the book, and one on who the reader is. Put your voice and opinions in a short direction note. Then generate a chapter-by-chapter outline and fix it now — it's much cheaper to move a chapter than to rewrite one.
Generate chapters in order so each builds on the last. Read every draft. Cut filler, add your own examples, and regenerate a chapter with specific notes when it misses ("shorter, more concrete, open with the client story").
Run checks across the full manuscript: facts and citations for non-fiction, continuity for fiction, and a read-through for repetition and a real ending. Then build the files you need to publish.
Each time a chapter is written or saved, it's scored by Jev, a fast judge model from TypeSafe, against a fixed bank of questions for its book type — plus a continuity pass that reads it beside the chapters before it and checks it against the facts they established. Findings flow straight into the editor pass as concrete fixes.
No problems flagged.
Style issues flagged, each with a specific fix for the editor pass.
A high-confidence blocking problem — the book won't pass the publish-ready check until it's fixed or you override it as a labelled draft.
Chapter verdicts roll up into checks no single chapter can answer.
A single book grade in the Quality tab — withheld, with the reason, until enough of the book has been measured to mean something.
For fiction and non-fiction. High-confidence problems block the final build; you can answer a finding back with your reason, and a build that goes ahead on one says so.
Facts, names, and events checked against everything earlier chapters established — plus numbering, cross-references, and a real ending.
Totals, balances, and percentages are recomputed, so a figure that doesn't add up gets caught instead of printed.
For non-fiction: does the book build toward something, are the chapters in a defensible order, is anything missing or said twice. Advice, not a gate.
Every chapter also gets a slop score: how densely it uses the words and phrasing machine prose overuses, built on the open-source slop-score lists behind the EQ-Bench creative-writing leaderboard.
A clear promise is the single biggest lever on AI output. "A book about productivity" gets generic chapters. "A 30-day system for ADHD adults who've quit every planner they've tried" gets a book with a spine.
This is where your voice comes from. Say who's speaking, the tone, what you believe that others don't, and what to avoid. Plain notes are fine.
Reorder chapters so each depends only on what came before. Merge thin chapters and split crowded ones. Make sure the last chapter actually lands the promise.
Editing chapter 2 before drafting chapter 3 keeps mistakes from compounding. Add the things only you can: stories, numbers from your own work, strong opinions.
AI drafts can repeat themselves across chapters, drift in terminology, or promise a conclusion they never deliver. For non-fiction, verify every claim a reader will act on.
Export an EPUB for e-readers, a PDF, and — if you want print — a paperback interior and cover sized for your platform. Read the final file on a real device before you publish.
Yes — many authors use AI for outlining and first drafts. What matters is that the finished book is accurate, genuinely useful or entertaining, and that you follow your publishing platform's disclosure rules for AI-generated content.
Drafting is fast — an outline in about a minute and a chapter in a minute or two. A realistic schedule is a day or two for a first draft and one to several weeks of editing, depending on length and how much of your own material you add.
No. In Book Factory you fill in a topic or premise, the audience, a chapter count, and an optional direction note in plain language. The prompting happens behind the scenes.
Yes. The Free plan includes $4 of AI writing — about 40 chapters, or roughly three typical books — with every feature and export format and no API key needed. If you use it up, you can add your own Anthropic key in Settings and keep writing. A Pro plan is coming soon.